website/docs: fix outdated and incorrect example kubernetes deployment (#14928)

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

website/docs/add-secure-apps/outposts/manual-deploy-kubernetes.md

@@ -12,24 +12,20 @@ kind: Secret
 metadata:
     labels:
         app.kubernetes.io/instance: __OUTPOST_NAME__
-    app.kubernetes.io/managed-by: goauthentik.io
+        app.kubernetes.io/name: authentik-outpost
-    app.kubernetes.io/name: authentik-proxy
-    app.kubernetes.io/version: 2021.12.3
     name: authentik-outpost-api
-stringData:
-  authentik_host: "__AUTHENTIK_URL__"
-  authentik_host_insecure: "true"
-  token: "__AUTHENTIK_TOKEN__"
 type: Opaque
+stringData:
+    AUTHENTIK_HOST: "__AUTHENTIK_URL__"
+    AUTHENTIK_INSECURE: "true"
+    AUTHENTIK_TOKEN: "__AUTHENTIK_TOKEN__"
 ---
 apiVersion: v1
 kind: Service
 metadata:
     labels:
         app.kubernetes.io/instance: __OUTPOST_NAME__
-    app.kubernetes.io/managed-by: goauthentik.io
+        app.kubernetes.io/name: authentik-outpost
-    app.kubernetes.io/name: authentik-proxy
-    app.kubernetes.io/version: 2021.12.3
     name: authentik-outpost
 spec:
     ports:
@@ -43,52 +39,29 @@ spec:
           targetPort: https
     type: ClusterIP
     selector:
-    app.kubernetes.io/managed-by: goauthentik.io
-    app.kubernetes.io/name: authentik-outpost
         app.kubernetes.io/instance: __OUTPOST_NAME__
+        app.kubernetes.io/name: authentik-outpost
 ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
     labels:
         app.kubernetes.io/instance: __OUTPOST_NAME__
-    app.kubernetes.io/managed-by: goauthentik.io
+        app.kubernetes.io/name: authentik-outpost
-    app.kubernetes.io/name: authentik-proxy
-    app.kubernetes.io/version: 2021.12.3
     name: authentik-outpost
 spec:
     selector:
         matchLabels:
             app.kubernetes.io/instance: __OUTPOST_NAME__
-      app.kubernetes.io/managed-by: goauthentik.io
+            app.kubernetes.io/name: authentik-outpost
-      app.kubernetes.io/name: authentik-proxy
-      app.kubernetes.io/version: 2021.12.3
     template:
         metadata:
             labels:
                 app.kubernetes.io/instance: __OUTPOST_NAME__
-        app.kubernetes.io/managed-by: goauthentik.io
+                app.kubernetes.io/name: authentik-outpost
-        app.kubernetes.io/name: authentik-proxy
-        app.kubernetes.io/version: 2021.12.3
         spec:
             containers:
-        - env:
+                - image: ghcr.io/goauthentik/proxy
-          - name: AUTHENTIK_HOST
-            valueFrom:
-              secretKeyRef:
-                key: authentik_host
-                name: authentik-outpost-api
-          - name: AUTHENTIK_TOKEN
-            valueFrom:
-              secretKeyRef:
-                key: token
-                name: authentik-outpost-api
-          - name: AUTHENTIK_INSECURE
-            valueFrom:
-              secretKeyRef:
-                key: authentik_host_insecure
-                name: authentik-outpost-api
-        image: ghcr.io/goauthentik/proxy
                   name: proxy
                   ports:
                       - containerPort: 9000
@@ -97,30 +70,35 @@ spec:
                       - containerPort: 9443
                         name: https
                         protocol: TCP
+                  envFrom:
+                      - secretRef:
+                            name: authentik-outpost-api
 ---
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
     annotations:
+        # This example includes annotations for common ingress controllers,
+        # remove annotations not used
         nginx.ingress.kubernetes.io/affinity: cookie
         nginx.ingress.kubernetes.io/proxy-buffer-size: 16k
         nginx.ingress.kubernetes.io/proxy-buffers-number: "4"
         traefik.ingress.kubernetes.io/affinity: "true"
     labels:
         app.kubernetes.io/instance: __OUTPOST_NAME__
-    app.kubernetes.io/managed-by: goauthentik.io
+        app.kubernetes.io/name: authentik-outpost
-    app.kubernetes.io/name: authentik-proxy
-    app.kubernetes.io/version: 2021.12.3
     name: authentik-outpost
 spec:
+    ingressClassName: nginx
     rules:
         - host: __EXTERNAL_HOSTNAME__
           http:
               paths:
-      - backend:
+                  - path: /
+                    pathType: Prefix
+                    backend:
                         service:
                             name: authentik-outpost
                             port:
                                 name: http
-        path: /
 ```